Of course, smart criminals would not use unencrypted text messages that could be intercepted. But catching the low-hanging fruit is better than nothing.
Thanks for your helpful link to a google search for "NSA wiretap".
None of the links you post have anything to do with "storing all text messages". Exaggeration like this just turns people cold to bothering to read about genuine privacy concerns.
The issues you post are real and probably wrong and should be challenged legally, where evidence exists (a lot of the AT&T stuff is based on evidence from a single former employee), but when you confuse Warrentless Wiretapping with "storing all text messages", it makes me want to not listen to what you're saying.
Do you have any evidence for this? The Wiretap Act clearly prohibits it, if they are doing it, it's definitely illegal.